Enter the original text and modified text separately. The tool uses the longest common subsequence algorithm for true line-by-line alignment: green indicates new additions, red indicates deletions, and the rest is unmodified content. All calculations are done in the local browser only.
Good for comparing code, configurations, documents, and lists. Press Ctrl+Enter or Command+Enter to get started quickly; very large text should be broken into smaller pieces to avoid consuming too much browser memory.